Rocha-Lona, L., Edith Alvarez-Reyes, E., Garza-Reyes, J. A., & Kumar, V. (2015). An integrated approach of Six Sigma and QSAM methodologies for a pharmaceutical company: A shipment improvement process. International Journal of Lean Enterprise Research, 1(3), 266-283. https://doi.org/10.1504/IJLER.2015.071743